The circuit court clerk provides probate and naturalization records, unproved wills and court cases from 1839 to present. Records from 1917 to present are available with a notice of 24-48 hours (they may need to be pulled from off-site storage).
1839-1917 records may possibly be accessed through volunteers that work in circuit clerk's office (condition of documents merit they be handled by trained personnel only).

County Tax Records

Records from the 1850s to five years prior to the current date are available; some years on microfilm. Naperville tax records are maintained back to circa 1860. Books cannot be copied. Microfilm copies range from $1 to $3 and quarter-sections of maps can be copied for $3.
Plat books are available from 1975 to present; earlier ones have no dates. Aerial photos from 1964 to 1981 are available but cannot be copied.

The society collects various genealogical information connected with DuPage County; conducts various surveys of local resources; compiles various listings from county census records, cemetery records, etc. and publishes various materials and findings useful to the genealogist.

DuPage County Historical MuseumPhone: 630.682.7343

The museum has resources on county histories, county atlases, maps of various cities in DuPage County, family histories, photograph files, and cemetery records. Materials are available by appointment.

Birth and death records from 1877-1927 are available, though not complete. Marriage records from 1839-1932 are available, though not complete; often only names listed are those of the married couple and celebrant.